/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7a177ad [2020-11-09 15:31:08,567 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-09 15:31:08,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-09 15:31:08,607 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-09 15:31:08,607 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-09 15:31:08,609 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-09 15:31:08,611 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-09 15:31:08,613 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-09 15:31:08,615 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-09 15:31:08,616 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-09 15:31:08,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-09 15:31:08,619 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-09 15:31:08,619 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-09 15:31:08,621 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-09 15:31:08,622 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-09 15:31:08,624 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-09 15:31:08,625 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-09 15:31:08,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-09 15:31:08,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-09 15:31:08,630 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-09 15:31:08,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-09 15:31:08,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-09 15:31:08,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-09 15:31:08,638 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-09 15:31:08,641 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-11-09 15:31:08,645 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-09 15:31:08,646 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-09 15:31:08,647 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-09 15:31:08,648 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-09 15:31:08,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-09 15:31:08,650 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-09 15:31:08,650 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-09 15:31:08,651 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-09 15:31:08,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-09 15:31:08,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-09 15:31:08,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-09 15:31:08,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2020-11-09 15:31:08,713 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-09 15:31:08,713 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-09 15:31:08,716 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-09 15:31:08,716 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-09 15:31:08,716 INFO L138 SettingsManager]: * Use SBE=true [2020-11-09 15:31:08,716 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-09 15:31:08,717 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-09 15:31:08,717 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-09 15:31:08,718 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-09 15:31:08,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-09 15:31:08,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-09 15:31:08,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-09 15:31:08,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-09 15:31:08,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-09 15:31:08,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-09 15:31:08,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-09 15:31:08,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-09 15:31:08,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-09 15:31:08,721 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-09 15:31:08,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-09 15:31:08,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-09 15:31:08,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:31:08,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-09 15:31:08,722 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2020-11-09 15:31:08,723 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-09 15:31:08,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-09 15:31:08,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-09 15:31:08,723 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2020-11-09 15:31:08,723 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2020-11-09 15:31:08,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-09 15:31:08,724 INFO L138 SettingsManager]: * Interpolant automaton=MCR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-09 15:31:09,120 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-09 15:31:09,148 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-09 15:31:09,151 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-09 15:31:09,153 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-09 15:31:09,154 INFO L275 PluginConnector]: CDTParser initialized [2020-11-09 15:31:09,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-11-09 15:31:09,257 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa81e1144/3d010e7bcf4044a5a095f936ab51dd30/FLAGb6cb3d402 [2020-11-09 15:31:10,073 INFO L306 CDTParser]: Found 1 translation units. [2020-11-09 15:31:10,074 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc.i [2020-11-09 15:31:10,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa81e1144/3d010e7bcf4044a5a095f936ab51dd30/FLAGb6cb3d402 [2020-11-09 15:31:10,257 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/aa81e1144/3d010e7bcf4044a5a095f936ab51dd30 [2020-11-09 15:31:10,262 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-09 15:31:10,272 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-11-09 15:31:10,276 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-09 15:31:10,276 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-09 15:31:10,281 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-09 15:31:10,282 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:31:10" (1/1) ... [2020-11-09 15:31:10,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@598e2143 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:10, skipping insertion in model container [2020-11-09 15:31:10,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 03:31:10" (1/1) ... [2020-11-09 15:31:10,297 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-09 15:31:10,371 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-09 15:31:10,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:31:10,833 INFO L203 MainTranslator]: Completed pre-run [2020-11-09 15:31:10,905 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-09 15:31:11,039 INFO L208 MainTranslator]: Completed translation [2020-11-09 15:31:11,040 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11 WrapperNode [2020-11-09 15:31:11,047 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-09 15:31:11,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-09 15:31:11,049 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-09 15:31:11,050 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-09 15:31:11,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11" (1/1) ... [2020-11-09 15:31:11,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11" (1/1) ... [2020-11-09 15:31:11,149 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-09 15:31:11,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-09 15:31:11,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-09 15:31:11,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-09 15:31:11,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11" (1/1) ... [2020-11-09 15:31:11,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11" (1/1) ... [2020-11-09 15:31:11,176 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11" (1/1) ... [2020-11-09 15:31:11,177 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11" (1/1) ... [2020-11-09 15:31:11,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11" (1/1) ... [2020-11-09 15:31:11,197 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11" (1/1) ... [2020-11-09 15:31:11,200 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11" (1/1) ... [2020-11-09 15:31:11,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-09 15:31:11,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-09 15:31:11,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-09 15:31:11,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-09 15:31:11,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-09 15:31:11,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-09 15:31:11,306 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-11-09 15:31:11,307 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-09 15:31:11,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-09 15:31:11,308 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-11-09 15:31:11,308 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-11-09 15:31:11,310 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-11-09 15:31:11,310 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-11-09 15:31:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-11-09 15:31:11,311 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-11-09 15:31:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-09 15:31:11,311 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-11-09 15:31:11,312 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-09 15:31:11,312 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-09 15:31:11,314 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-11-09 15:31:11,799 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-09 15:31:11,799 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-11-09 15:31:11,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:31:11 BoogieIcfgContainer [2020-11-09 15:31:11,802 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-09 15:31:11,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-09 15:31:11,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-09 15:31:11,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-09 15:31:11,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 03:31:10" (1/3) ... [2020-11-09 15:31:11,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdb3191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:31:11, skipping insertion in model container [2020-11-09 15:31:11,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 03:31:11" (2/3) ... [2020-11-09 15:31:11,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdb3191 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 03:31:11, skipping insertion in model container [2020-11-09 15:31:11,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.11 03:31:11" (3/3) ... [2020-11-09 15:31:11,811 INFO L111 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc.i [2020-11-09 15:31:11,827 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-11-09 15:31:11,828 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-11-09 15:31:11,832 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-09 15:31:11,833 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-11-09 15:31:11,864 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,864 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,865 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,865 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,865 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,865 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,865 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,866 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,866 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,867 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,867 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,868 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,868 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,868 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,868 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,868 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,868 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,869 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,869 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,869 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,870 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,870 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,870 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,871 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,871 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,871 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,871 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,872 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,875 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,875 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,876 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,876 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,883 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,883 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,883 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,884 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,890 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,890 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,890 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-11-09 15:31:11,892 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-11-09 15:31:11,906 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-09 15:31:11,930 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-09 15:31:11,931 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-09 15:31:11,931 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-11-09 15:31:11,931 INFO L380 AbstractCegarLoop]: Backedges is MCR [2020-11-09 15:31:11,931 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-09 15:31:11,931 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-09 15:31:11,931 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-09 15:31:11,931 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-09 15:31:11,945 INFO L128 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2020-11-09 15:31:11,946 INFO L135 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:31:11,949 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 86 places, 79 transitions, 173 flow [2020-11-09 15:31:11,951 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 86 places, 79 transitions, 173 flow [2020-11-09 15:31:11,998 INFO L129 PetriNetUnfolder]: 3/76 cut-off events. [2020-11-09 15:31:11,999 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-11-09 15:31:12,004 INFO L84 FinitePrefix]: Finished finitePrefix Result has 86 conditions, 76 events. 3/76 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 57 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 60. Up to 2 conditions per place. [2020-11-09 15:31:12,007 INFO L116 LiptonReduction]: Number of co-enabled transitions 1440 [2020-11-09 15:31:15,059 WARN L194 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 15:31:15,357 WARN L194 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-11-09 15:31:15,475 INFO L131 LiptonReduction]: Checked pairs total: 2779 [2020-11-09 15:31:15,476 INFO L133 LiptonReduction]: Total number of compositions: 70 [2020-11-09 15:31:15,483 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 23 transitions, 61 flow [2020-11-09 15:31:15,527 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 362 states. [2020-11-09 15:31:15,529 INFO L276 IsEmpty]: Start isEmpty. Operand 362 states. [2020-11-09 15:31:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-09 15:31:15,537 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:15,539 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:15,539 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:15,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:15,545 INFO L82 PathProgramCache]: Analyzing trace with hash -460323677, now seen corresponding path program 1 times [2020-11-09 15:31:15,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:15,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858075667] [2020-11-09 15:31:15,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:31:15,782 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858075667] [2020-11-09 15:31:15,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:15,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:31:15,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1567148685] [2020-11-09 15:31:15,786 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:15,789 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:15,803 INFO L252 McrAutomatonBuilder]: Finished intersection with 9 states and 8 transitions. [2020-11-09 15:31:15,803 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:15,807 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:15,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-09 15:31:15,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:15,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-09 15:31:15,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 15:31:15,824 INFO L87 Difference]: Start difference. First operand 362 states. Second operand 2 states. [2020-11-09 15:31:15,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:15,852 INFO L93 Difference]: Finished difference Result 362 states and 1072 transitions. [2020-11-09 15:31:15,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-09 15:31:15,854 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-09 15:31:15,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:15,872 INFO L225 Difference]: With dead ends: 362 [2020-11-09 15:31:15,872 INFO L226 Difference]: Without dead ends: 298 [2020-11-09 15:31:15,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-09 15:31:15,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2020-11-09 15:31:15,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2020-11-09 15:31:15,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 298 states. [2020-11-09 15:31:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 864 transitions. [2020-11-09 15:31:15,962 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 864 transitions. Word has length 8 [2020-11-09 15:31:15,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:15,963 INFO L481 AbstractCegarLoop]: Abstraction has 298 states and 864 transitions. [2020-11-09 15:31:15,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-09 15:31:15,964 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 864 transitions. [2020-11-09 15:31:15,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-09 15:31:15,965 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:15,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:15,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-09 15:31:15,966 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:15,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:15,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1385173359, now seen corresponding path program 1 times [2020-11-09 15:31:15,971 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:15,971 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108322850] [2020-11-09 15:31:15,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:16,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:16,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:31:16,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108322850] [2020-11-09 15:31:16,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:16,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:31:16,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [753296984] [2020-11-09 15:31:16,136 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:16,137 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:16,139 INFO L252 McrAutomatonBuilder]: Finished intersection with 10 states and 9 transitions. [2020-11-09 15:31:16,139 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:16,140 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:16,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:31:16,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:16,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:31:16,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:31:16,143 INFO L87 Difference]: Start difference. First operand 298 states and 864 transitions. Second operand 4 states. [2020-11-09 15:31:16,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:16,196 INFO L93 Difference]: Finished difference Result 330 states and 904 transitions. [2020-11-09 15:31:16,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:31:16,197 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-09 15:31:16,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:16,201 INFO L225 Difference]: With dead ends: 330 [2020-11-09 15:31:16,201 INFO L226 Difference]: Without dead ends: 266 [2020-11-09 15:31:16,202 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:31:16,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-11-09 15:31:16,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 266. [2020-11-09 15:31:16,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-11-09 15:31:16,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 744 transitions. [2020-11-09 15:31:16,231 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 744 transitions. Word has length 9 [2020-11-09 15:31:16,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:16,232 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 744 transitions. [2020-11-09 15:31:16,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:31:16,234 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 744 transitions. [2020-11-09 15:31:16,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:31:16,238 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:16,238 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:16,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-09 15:31:16,239 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:16,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:16,240 INFO L82 PathProgramCache]: Analyzing trace with hash 1113237188, now seen corresponding path program 1 times [2020-11-09 15:31:16,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:16,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459382634] [2020-11-09 15:31:16,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:16,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:16,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:31:16,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459382634] [2020-11-09 15:31:16,422 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:16,422 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:31:16,423 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [919549988] [2020-11-09 15:31:16,423 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:16,424 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:16,426 INFO L252 McrAutomatonBuilder]: Finished intersection with 18 states and 23 transitions. [2020-11-09 15:31:16,426 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:16,581 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:16,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:31:16,582 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:16,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:31:16,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:31:16,583 INFO L87 Difference]: Start difference. First operand 266 states and 744 transitions. Second operand 5 states. [2020-11-09 15:31:16,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:16,687 INFO L93 Difference]: Finished difference Result 282 states and 764 transitions. [2020-11-09 15:31:16,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-09 15:31:16,687 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-09 15:31:16,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:16,693 INFO L225 Difference]: With dead ends: 282 [2020-11-09 15:31:16,693 INFO L226 Difference]: Without dead ends: 250 [2020-11-09 15:31:16,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:31:16,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-11-09 15:31:16,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 250. [2020-11-09 15:31:16,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-11-09 15:31:16,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 692 transitions. [2020-11-09 15:31:16,736 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 692 transitions. Word has length 11 [2020-11-09 15:31:16,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:16,736 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 692 transitions. [2020-11-09 15:31:16,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:31:16,737 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 692 transitions. [2020-11-09 15:31:16,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-09 15:31:16,739 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:16,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:16,740 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-09 15:31:16,740 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:16,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:16,741 INFO L82 PathProgramCache]: Analyzing trace with hash 284483281, now seen corresponding path program 1 times [2020-11-09 15:31:16,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:16,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335416734] [2020-11-09 15:31:16,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:16,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:31:16,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335416734] [2020-11-09 15:31:16,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:16,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:31:16,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [110553671] [2020-11-09 15:31:16,826 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:16,827 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:16,829 INFO L252 McrAutomatonBuilder]: Finished intersection with 14 states and 15 transitions. [2020-11-09 15:31:16,829 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:16,834 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:16,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:31:16,835 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:16,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:31:16,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:31:16,836 INFO L87 Difference]: Start difference. First operand 250 states and 692 transitions. Second operand 5 states. [2020-11-09 15:31:16,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:16,886 INFO L93 Difference]: Finished difference Result 306 states and 826 transitions. [2020-11-09 15:31:16,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:31:16,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-11-09 15:31:16,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:16,894 INFO L225 Difference]: With dead ends: 306 [2020-11-09 15:31:16,894 INFO L226 Difference]: Without dead ends: 170 [2020-11-09 15:31:16,895 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:31:16,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-11-09 15:31:16,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-11-09 15:31:16,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-11-09 15:31:16,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 432 transitions. [2020-11-09 15:31:16,914 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 432 transitions. Word has length 11 [2020-11-09 15:31:16,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:16,914 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 432 transitions. [2020-11-09 15:31:16,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:31:16,914 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 432 transitions. [2020-11-09 15:31:16,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-09 15:31:16,916 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:16,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:16,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-09 15:31:16,917 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:16,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:16,918 INFO L82 PathProgramCache]: Analyzing trace with hash 150494398, now seen corresponding path program 1 times [2020-11-09 15:31:16,929 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:16,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230040477] [2020-11-09 15:31:16,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:16,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:31:17,001 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230040477] [2020-11-09 15:31:17,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:17,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-09 15:31:17,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1311716716] [2020-11-09 15:31:17,002 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:17,003 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:17,006 INFO L252 McrAutomatonBuilder]: Finished intersection with 20 states and 26 transitions. [2020-11-09 15:31:17,006 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:17,043 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:17,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-09 15:31:17,043 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:17,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-09 15:31:17,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-09 15:31:17,044 INFO L87 Difference]: Start difference. First operand 170 states and 432 transitions. Second operand 4 states. [2020-11-09 15:31:17,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:17,064 INFO L93 Difference]: Finished difference Result 182 states and 446 transitions. [2020-11-09 15:31:17,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:31:17,064 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-09 15:31:17,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:17,066 INFO L225 Difference]: With dead ends: 182 [2020-11-09 15:31:17,066 INFO L226 Difference]: Without dead ends: 158 [2020-11-09 15:31:17,066 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:31:17,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-11-09 15:31:17,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-11-09 15:31:17,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-11-09 15:31:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 394 transitions. [2020-11-09 15:31:17,074 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 394 transitions. Word has length 12 [2020-11-09 15:31:17,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:17,074 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 394 transitions. [2020-11-09 15:31:17,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-09 15:31:17,074 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 394 transitions. [2020-11-09 15:31:17,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-09 15:31:17,076 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:17,076 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:17,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-09 15:31:17,076 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:17,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:17,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1736979236, now seen corresponding path program 1 times [2020-11-09 15:31:17,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:17,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052658529] [2020-11-09 15:31:17,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:17,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:17,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:31:17,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052658529] [2020-11-09 15:31:17,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:17,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:31:17,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1442433219] [2020-11-09 15:31:17,161 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:17,166 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:17,173 INFO L252 McrAutomatonBuilder]: Finished intersection with 30 states and 48 transitions. [2020-11-09 15:31:17,173 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:17,294 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:17,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:31:17,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:17,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:31:17,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:31:17,297 INFO L87 Difference]: Start difference. First operand 158 states and 394 transitions. Second operand 5 states. [2020-11-09 15:31:17,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:17,360 INFO L93 Difference]: Finished difference Result 212 states and 513 transitions. [2020-11-09 15:31:17,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-09 15:31:17,361 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-09 15:31:17,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:17,363 INFO L225 Difference]: With dead ends: 212 [2020-11-09 15:31:17,363 INFO L226 Difference]: Without dead ends: 98 [2020-11-09 15:31:17,363 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-09 15:31:17,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-09 15:31:17,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-11-09 15:31:17,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-11-09 15:31:17,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 218 transitions. [2020-11-09 15:31:17,368 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 218 transitions. Word has length 13 [2020-11-09 15:31:17,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:17,370 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 218 transitions. [2020-11-09 15:31:17,370 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:31:17,370 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 218 transitions. [2020-11-09 15:31:17,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-09 15:31:17,374 INFO L414 BasicCegarLoop]: Found error trace [2020-11-09 15:31:17,374 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-09 15:31:17,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-11-09 15:31:17,374 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-09 15:31:17,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-09 15:31:17,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1116620912, now seen corresponding path program 1 times [2020-11-09 15:31:17,377 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-09 15:31:17,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524364544] [2020-11-09 15:31:17,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-09 15:31:17,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-09 15:31:17,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-09 15:31:17,429 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524364544] [2020-11-09 15:31:17,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-09 15:31:17,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-09 15:31:17,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1327854969] [2020-11-09 15:31:17,430 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2020-11-09 15:31:17,431 INFO L249 McrAutomatonBuilder]: Started intersection. [2020-11-09 15:31:17,436 INFO L252 McrAutomatonBuilder]: Finished intersection with 32 states and 48 transitions. [2020-11-09 15:31:17,436 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2020-11-09 15:31:17,510 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2020-11-09 15:31:17,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-09 15:31:17,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-09 15:31:17,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-09 15:31:17,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-09 15:31:17,512 INFO L87 Difference]: Start difference. First operand 98 states and 218 transitions. Second operand 5 states. [2020-11-09 15:31:17,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-09 15:31:17,541 INFO L93 Difference]: Finished difference Result 86 states and 186 transitions. [2020-11-09 15:31:17,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-09 15:31:17,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-11-09 15:31:17,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-09 15:31:17,542 INFO L225 Difference]: With dead ends: 86 [2020-11-09 15:31:17,542 INFO L226 Difference]: Without dead ends: 0 [2020-11-09 15:31:17,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-09 15:31:17,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-09 15:31:17,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-09 15:31:17,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-09 15:31:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-09 15:31:17,544 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-11-09 15:31:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-09 15:31:17,544 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-09 15:31:17,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-09 15:31:17,544 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-09 15:31:17,544 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-09 15:31:17,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-11-09 15:31:17,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.11 03:31:17 BasicIcfg [2020-11-09 15:31:17,549 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-09 15:31:17,551 INFO L168 Benchmark]: Toolchain (without parser) took 7284.85 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 132.6 MB in the beginning and 120.4 MB in the end (delta: 12.2 MB). Peak memory consumption was 45.9 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:17,552 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 86.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-09 15:31:17,552 INFO L168 Benchmark]: CACSL2BoogieTranslator took 772.19 ms. Allocated memory is still 158.3 MB. Free memory was 131.8 MB in the beginning and 101.2 MB in the end (delta: 30.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:17,553 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.64 ms. Allocated memory is still 158.3 MB. Free memory was 101.2 MB in the beginning and 99.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:17,554 INFO L168 Benchmark]: Boogie Preprocessor took 60.29 ms. Allocated memory is still 158.3 MB. Free memory was 99.3 MB in the beginning and 97.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:17,555 INFO L168 Benchmark]: RCFGBuilder took 589.13 ms. Allocated memory is still 158.3 MB. Free memory was 97.9 MB in the beginning and 124.7 MB in the end (delta: -26.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:17,556 INFO L168 Benchmark]: TraceAbstraction took 5745.23 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 124.2 MB in the beginning and 120.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. [2020-11-09 15:31:17,560 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 125.8 MB. Free memory is still 86.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 772.19 ms. Allocated memory is still 158.3 MB. Free memory was 131.8 MB in the beginning and 101.2 MB in the end (delta: 30.6 MB). Peak memory consumption was 30.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 100.64 ms. Allocated memory is still 158.3 MB. Free memory was 101.2 MB in the beginning and 99.3 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.29 ms. Allocated memory is still 158.3 MB. Free memory was 99.3 MB in the beginning and 97.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 589.13 ms. Allocated memory is still 158.3 MB. Free memory was 97.9 MB in the beginning and 124.7 MB in the end (delta: -26.8 MB). Peak memory consumption was 10.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5745.23 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 124.2 MB in the beginning and 120.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 36.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks 761 VarBasedMoverChecksPositive, 19 VarBasedMoverChecksNegative, 0 SemBasedMoverChecksPositive, 0 SemBasedMoverChecksNegative, 0 SemBasedMoverChecksUnknown, SemBasedMoverCheckTime: 0.0s, 42 CheckedPairsTotal, LiptonReductionStatistics: ReductionTime: 3.5s, 86 PlacesBefore, 32 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 1440 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 41 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 70 TotalNumberOfCompositions, 2779 MoverChecksTotal - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.6s, OverallIterations: 7, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.5s, HoareTripleCheckerStatistics: 146 SDtfs, 142 SDslu, 214 SDs, 0 SdLazy, 86 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=362occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 78 NumberOfCodeBlocks, 78 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 2857 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...